Improvement in machines for making crucibles



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IMPROVEMENT IN MACHINES FCR MAKING- CRUCIBLES.

fthe Schedule referred to in these-Letters Patent and making part of the same.

To all whom it ma/y concern Be it known that I, JOSEPH WINKLE, of Pittsburg, in the county ofAllegheny, and State of Pennsylvania, have invented a new and useful Improvement in Machines for Making Orucibles; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and tothe letters and figures of reference marked thereon.

The nature of my invention consists in providing a machine for moulding eruci'bles with a jointed lever,'to which is attached a forming-blade, so arranged, with relation to said jointed lever, and the mould in which the crucible is formed, that said forming-blade will enter the centre of the mass of clay tor forming the crucible, and force and spread it out against all sides ofthe inner wall of the mouldsaid forming-blade and its lever being so arranged that the forming-blade can be removed from the mould and formed crucible without displacing the forming-blade.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

In the accompanying dlawings, which form part of my specification-'- Figure 1 is a side elevation of my improvement in machines for forming crucibles, representing a vertical section of the crucible-mould and its chuck, also the position of the forming-blade, while forcingthe clay out against the walls of the mould.

Figure 2 is a side elevation of the machine, representing a vertical section of the mould and crucible, and the position of the several parts when removing the forming-blade from the formed crueible and its mould.

Figure 3 represents my improvement for removing the crucible from the lower part of the mould.

Figure 4 is a side elevation of the crucible-mould.

In the drawings- `A represents the frame of the machine, which is provided with uprights B and B.

To the upright, B, at 3, is pivoted the part C of the jointed lever.

' The part C of the lever moves in a slot in the upright, B.

To the part G of the lever is attached a cord, y, which passes up and over a pulley in the upper end of the upright, B.

Onthe end ofthe cord is a weight, f.

The paxts C and C of the jointed levers are conneet/ed together by means of a hinge, D, provided with a guide, 1.

To the knuckle of the hinge is attached a cord, 1.-, the lower end of which is attached to an arm, pivoted at 2:,.ad used for shifting the belt used for imparting motion to the mould-chuck l on the end of the shaft m, provided with a driving-pulley, o, and loose pnlley, -n.

To the arm i is pivoted a foot-lever, J, which is vused for bringing the desired pressure on the jointed level' C and C', through the medium of which the formingblade c forces the material, of which the crueible or lother vessel is made, against the inner walls of the mould lt, which is made in two parts, as ,shown in the accompanying drawings.

.The bottom, w, of the mould R is detached, which is of great advantage for removing the pot from its mould.

To the pant C of the jointed lever may beattached a cord for supporting it, as indicated at 2. Thiscord may also be provided with a weight to act as a balance to the jointed lever.

As the construction and arrangement of my iml'n'ovement, and the relation the several parts bea-r to each other, will be readily seen and understood by the skilful mechanic, from the foregoing description, and

by reference to the accompanyiihlg drawings, I will therefore, without further 'description of its construction, proceed at once to describe itsb operation, which is as follows:

The mould It is placed in the chuck l. I then weigh a suitable mass of the material to make a crucible. -This mass is then placed in the mould R. The operator then places his foot on the lever J, which will Lh'aw down the 'jointed lever C and C', which will set the chuck in motion and bring `the forming-blade e down into the centre of the mass, for forming the crucible, (as shown in iig. 1,) and force it out against all sides of the walls ofthe mould, and the blade c will keep on approaching one side of the mould until ends 4 and 5 of the jointed lever C and O meet, at which time the crueible will be properly formed. The oper- .ator then removes his toot off the lever J, and the weight f, through the medium ofthe cord y, will raise up the jointed lever C Iand C', and thereby withdraw the forming-blade e out of the formed crucible, the operator guiding the lever and blade in their upward motion. l

It will be observed that arm 'i and footlever J act in connect-ion; that is to say, when .the foot-lever J is pressed down, the arm i will shift the belt for operating the chuck on the driving-pulley'o, and when the operator removes his foot ofi' the lever J, it will rise up, and the arm t' will shift the belt on to the loose pulley n, and the revolving motion ofthe chuck Z will cease.

The mould It is then removed from the chuck, and, after the crucible is sufficiently dry, the upper part of the mould is removed, and the lower part is then placed with its bottom, fw, resting on the upper-end of the pedestal (i, and the other part of the mould is lower, leaving the formed erucible resting on the bottom, fw, and pedestal 6, as shown in iig. 3.

The advantages of this arrangement for removing the formed crucible from its mould will be very apparent to all skilled in the art of moulding crucibles.

The arrangement, herein described, of the jointed lever G' C, hinge D, forming-blade e, cords g and k,

Aweightf, foot-lever J, belt-sl'iifting arm fi, and pulleys o and n, constructed and operated substantially as described, and for the purpose set forth.

JOSEPH WINKLE. Witnesses:

A. C. JOHNSTON, J AMES THOMPSON. 

